2021 Audi S3 2.0 TFSI
Price: £25,990. Fair price: £1,058 (3%) under the AskCar estimate of £27,048, our expected asking price for this car from its model, age, mileage and specification, drawing on 1,014 priced Audi S3 adverts on AskCar as of 2 November 2026.
AskCar lists 1,033 used Audi S3 from 633 UK dealerships, as of 2 November 2026.
Overview
- Make: Audi
- Model: S3
- Version: 2.0 TFSI S tronic 4WD Euro 6 (s/s) 5dr (306 bhp)
- Year: 2021
- Mileage: 39,855 miles
- Fuel: Petrol
- Body: Hatchback, 5 doors, 5 seats
- Engine: 2.0 litres, 306 bhp
- Gearbox: Automatic (S tronic)
- Drive: Four-wheel drive
- Colour: Blue
- CO2: 184 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
At 39,855 miles, this 2021 Audi S3 has covered about 4,200 fewer miles than other 2021 Audi S3 cars. The dealer is asking £25,990, which is £1,058 below the AskCar estimate of £27,048. To work out the AskCar estimate, we analyse UK dealer adverts for 1,014 Audi S3 cars across different ages and specifications. This car was first seen in our listings data 1 day ago. We checked its advertised mileage against the government's MOT record, and they match. The seller is Swansway Garages Blackburn Audi, based in Blackburn,. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 2 November 2026.
Price
Fair price: £1,058 (3%) under the AskCar estimate of £27,048.
The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.
It draws on 1,014 priced Audi S3 adverts across different ages and specifications, as of 2 November 2026.
A 2021 Audi S3 with the 2.0 petrol engine is typically advertised at £26,000: the median of the 43 for sale on AskCar, as of 2 November 2026.
Time on sale
AskCar first saw this 2021 Audi S3 advertised 1 day ago. About 4 in 10 of 2021 Audi S3 cars are gone from sale within a month of being advertised: 22 of the 50 first advertised between 13 July 2026 and 29 September 2026.
Price history
AskCar first saw this advert on 1 November 2026 at £25,990. Its asking price has not changed.
Mileage and MOT
MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 12 May 2027.
It has had 3 MOTs. The latest, on 8 May 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 35,906 miles, which matches the advertised 39,855 miles.
Advertised mileage is about 4,200 miles lower than the median mileage of a 2021 Audi S3 on AskCar.
Browse all Audi S3 cars for sale · 2021 Audi S3 price guide
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As of 2 November 2026, AskCar lists 586,270 cars and vans from 12,920 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.